Since you are reading this from the Singualrity source code, it will be assumed that you are building/compiling.
You must first install development and libraries to your host. Assuming Ubuntu (apply similar to RHEL derivatives):
$ sudo apt-get update && sudo apt-get install -y build-essential libssl-dev uuid-dev libgpgme11-dev
This is one of several ways to install and configure golang.
First, visit the golang download page and pick a
package archive to download. Copy the link address and download with wget.
$ export VERSION=1.10.3 OS=linux ARCH=amd64
$ cd /tmp
$ wget https://dl.google.com/go/go$VERSION.$OS-$ARCH.tar.gz
Then extract the archive to /usr/local (or use other instructions on go
installation page).
$ sudo tar -C /usr/local -xzf go$VERSION.$OS-$ARCH.tar.gz
Finally, set up your environment for go
$ echo 'export GOPATH=${HOME}/go' >> ~/.bashrc
$ echo 'export PATH=/usr/local/go/bin:${PATH}:${GOPATH}/bin' >> ~/.bashrc
$ source ~/.bashrc
golang is a bit finicky about where things are placed. Here is the correct way to build Singularity from source.
$ mkdir -p $GOPATH/src/github.com/singularityware
$ cd $GOPATH/src/github.com/singularityware
$ git clone https://github.com/singularityware/singularity.git
$ cd singularity
Dependencies are managed using dep. You can
use go get to install it like so:
$ go get -u -v github.com/golang/dep/cmd/dep
Now you are ready to build Singularity. Dependencies will be automatically downloaded. You can build Singularity using the following commands:
$ cd $GOPATH/src/github.com/singularityware/singularity
$ ./mconfig
$ cd ./builddir
$ make
$ sudo make install
To build in a different folder and to set the install prefix to a different path:
$ ./mconfig -p /usr/local -b ./buildtree